The X‐Ray Structure and Spectrum of the Pulsar Wind Nebula Surrounding PSR B1853+01 in W44
Open Access
- 1 November 2002
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 579 (1) , 404-410
- https://doi.org/10.1086/342672
Abstract
We present the result of a Chandra ACIS observation of the pulsar PSR B1853+01 and its associated pulsar wind nebula (PWN), embedded within the supernova remnant W44. A hard band ACIS map cleanly distinguishes the PWN from the thermal emission of W44. The nebula is extended in the north-south direction, with an extent about half that of the radio emission. Morphological differences between the X-ray and radio images are apparent. Spectral fitting reveals a clear difference in spectral index between the hard emission from PSR B1853+01 (Gamma ~ 1.4) and the extended nebula (Gamma ~ 2.2). The more accurate values for the X-ray flux and spectral index are used refine estimates for PWN parameters, including magnetic field strength, the average Lorentz factor, gamma, of the particles in the wind, the magnetization parameter, sigma, and the ratio k of electrons to other particles.Comment: 10 pages, 3 figures, accepted by ApKeywords
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This publication has 21 references indexed in Scilit:
- The plerion nebula in IC 443: The XMM-Newton viewAstronomy & Astrophysics, 2001
- The X-ray nebula of the filled center supernova remnant 3C 58 and its interaction with the environmentAstronomy & Astrophysics, 2001
- A Model for the X-Ray Luminosity of Pulsar NebulaeThe Astrophysical Journal, 2000
- Modeling W44 as a Supernova Remnant in a Density Gradient with a Partially Formed Dense Shell and Thermal Conduction in the Hot Interior. I. The Analytical ModelThe Astrophysical Journal, 1999
- Polarization Observations of 1720 MHz OH Masers toward the Three Supernova Remnants W28, W44, and IC 443The Astrophysical Journal, 1997
- New Radio and Optical Study of the Supernova Remnant W44The Astronomical Journal, 1997
- Discovery of an X-Ray Synchrotron Nebula Associated with the Radio Pulsar PSR B1853+01 in the Supernova Remnant W44The Astrophysical Journal, 1996
- The Pulsar Wind Nebula Around PSR B1853+01 in the Supernova Remnant W44The Astrophysical Journal, 1996
- Magnetohydrodynamic model of Crab nebula radiationThe Astrophysical Journal, 1984
- Confinement of the Crab pulsar's wind by its supernova remnantThe Astrophysical Journal, 1984